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26 6 26 7 26 8 26 9 27 0 27 1 27 2 27 3 27 4 27 5 27 6 1985 1984 1983 1982 1981 1980 1979 1978 1977 1976

= Free Coordinate    = Occupied(Single Region)     = Occupied (Var Region)     = Center of the grid